clear search field when switching to/from private vault

Currently, when there is text in the search field and you switch to the private vault the text and search filter stay (so nothing in shown in the private vault). These searches are most likely going to be different (I don't have hostnames in my private vault and don't have credentials in my host section), so it would be nice (will save me a click) to have RDM clear both the text field (and thus search filter) when switching to/from the private vault.